The CW has released official descriptions for their Elseworlds crossover event episodes of Arrow, The Flash, and Supergirl.

The CW has released official descriptions for the three episodes that will make up this year’s DC TV crossover – “Elseworlds!” The Flash, Supergirl, and Arrow all cross over for a huge event from December 9 through December 11; new characters like Lois Lane and Batwoman will enter the Arrowverse! Here are the descriptions:

December 9 at 8PM: Hour One: The Flash

EPIC ELSEWORLDS CROSSOVER KICKS OFF TONIGHT — When Barry Allen (Grant Gustin) and Oliver Queen (guest star Stephen Amell) wake up one morning and realize they have swapped bodies with each other, the two set off to find out what disturbed the timeline to cause such a shift. However, things quickly go from bad to worse when they present their case to Team Flash and the gang doesn’t believe them. Barry and Oliver realize they need Supergirl’s (guest star Melissa Benoist) help and travel to Smallville on Earth-38 where they end up meeting Kara’s cousin, Clark Kent (guest star Tyler Hoechlin), and intrepid reporter, Lois Lane (guest star Elizabeth Tulloch). LaMonica Garrett guest stars as The Monitor. Kevin Tancharoen directed the episode written by Eric Wallace & Sam Chalsen (#509). Original airdate 12/9/2018.

December 10 at 8PM: Hour Two: Arrow

THE ELSEWORLDS CROSSOVER CONTINUES IN GOTHAM CITY WITH BATWOMAN (RUBY ROSE) — With Oliver (Stephen Amell) and Barry (guest star Grant Gustin) still stuck in the other’s bodies, the two get a lead on John Deegan (guest star Jeremy Davies) and head to Gotham City with Supergirl (guest star Melissa Benoist) to figure out why their reality has changed. While there, they meet the mysterious Kate Kane (guest star Ruby Rose) who provides them with information that leads the group to Arkham Asylum. James Bamford directed the episode with teleplay by Marc Guggenheim and story by Caroline Dries (#709). Original airdate 12/10/2018.

Craig Byrne, Editor-In-Chief

KSiteTV Editor-In-Chief Craig Byrne has been writing about TV on the internet since 1995. He is also the author of several published books, including Smallville: The Visual Guide and the show's Official Companions for Seasons 4-7.

I knew former Smallville writer Caroline Dries would be working on Batwoman, but I am super happy to find out that she ALSO wrote the story for Batwoman’s debut in “Elseworlds”!!! I absolutely LOVE her work on Smallville, and I’m super pumped to see her work in “Elseworlds” and then on Batwoman!!!